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why is biodiversity important a level biology

January 17, 2021

Traditionally, ecologists have measured biodiversity by taking into account both the number of species and the number of individuals in each of those species. ‘Biodiversity’ comes from two words: ‘biological’, which means relating to biology or living organisms, and ‘diversity’, meaning a range of different things or variety. Biodiversity is also considered by many to have intrinsic value—that is, each species has a value and a right to exist, whether or not it is known to have value to humans. Traditionally, ecologists have measured biodiversity by taking into account both the number of species and the number of individuals in each of those species. Without biodiversity, all humans would basically be clones of each other. Why not? the population of the species falls below a critical level; Biodiversity. Genetic engineering involves the transfer of genes from one organism to (usually) an unrelated species. Biodiversity is important, more than just the 'I want my children to enjoy it' reason. Understanding how biodiversity evolved and is evolving on Earth and how to correctly use and interpret biodiversity data is important for all students interested in conservation biology and ecology, whether they pursue careers in academia or as policy makers and other professionals (students graduating from our programs do both). They are present abundantly in every living cell. Documenting spatial patterns in biodiversity is difficult because taxonomic, functional, trophic, genetic, and other dimensions of biodiversity have been relatively poorly quantified. Productive use: Ø Products commercially harvested from biodiversity for exchange in market. That’s why an ecosystem that’s losing biodiversity only declines slowly at first. Genetic diversity. I would aim to include the following: 1. This A-Level Biology section of Revision Science explains biodiversity classification including examples. Module 23: Ecology. Having a low biodiversity isn’t necessarily an issue. Biodiversity is important to most aspects of our lives. proteins) and their […] Biodiversity, also called biological diversity, the variety of life found in a place on Earth or, often, the total variety of life on Earth. Consumptive use (3). Read first: Gaston, K.J. Biology is the study of life. Biodiversity is usually explored at three levels - genetic diversity, species diversity and ecosystem diversity. An example of a keystone species is a shark. 20.1) Biotechnology and genetic engineering Biotechnology is the application of biological organisms, systems or processes to manufacturing and service industries. It is important in natural as well as artificial ecosystems. Discusses the benefits of biodiversity. Biodiversity. It … Ecological diversity (or biodiversity) is the total amount of variety within life on earth. It may not be clear why biologists are concerned about biodiversity loss. Both species diversity and genetic diversity are important within a habitat, because they make it more likely that the habitat can adapt successfully to changing conditions. How does biodiversity vary spatially across the globe? * Biodiversity also refers to number of different species living in a particular region. Search for: The Importance of Biodiversity to Human Life. What is biodiversity and why does it matter to us? Even knowledge of taxonomic diversity, the best known dimension of biodiversity, is incomplete and strongly biased toward the species level, megafauna, temperate systems, and components used by people. The term biodiversity was coined in 1985. The current high rates will cause a precipitous decline in the biodiversity of the planet in the next century or two. It can be the cause of various grave problems like pollution, habitat loss, resource exploitation, climate change, species extinction, disease outbreak, and so on. It is a very broad and diverse field. 2000, Global patterns in biodiversity, Nature, 405, 220-227 The paper by Gaston (2000) is an excellent place to start researching the spatial patterns of biodiversity, and some of the theories proposed to explain these patterns. Biodiversity is good for the economy. Biodiversity describes the richness and variety of life on earth. Productive use (2). For example deserts and arctic regions naturally have low a biodiversity due to the harsh environment. Biodiversity is a broad term for biological variety, and it can be measured at a number of organizational levels. An indicator species is a species that serves as a measure to the abiotic and biotic factors of the ecosystem. This is a fully editable PowerPoint presentation designed specifically for the new Edexcel A Level Biology B Specification for first teaching in 2015. We value biodiversity for many reasons, some utilitarian, some intrinsic. Both processes often make use of bacteria because of their ability to make complex molecules (eg. Each specification objective is covered in just the right amount of detail with clear diagrams and clever slide animations. The cell cycle including G1 (in which some organelles are replicated), S phase (in which DNA is replicated) and G2 then mitosis. A common measure of this variety, called species richness, is the count of species in an area. So you want to study biology…Duh! Cycles occur all over biology and this is a good example of a question where you should be able to mention an extensive range of subjects. This means we value biodiversity both for what it provides to humans, and for the value it has in its own right. But when it loses too much, it hits a tipping point and falls off a cliff. It enables the population to adapt to its environment and respond to natural selection. It is a natural science. It is the most complex and important feature of our planet. Please update your bookmarks accordingly. Over 22,000 learners have used our materials to pass their exams. Why Biodiversity is Essential for Sustainable Development. So really, the important shift here is to stop thinking of the planet as a physical system but as a linked biological and physical system. Biodiversity is a broad term for biological variety, and it can be measured at a number of organizational levels. Where is biodiversity highest and lowest? The natural disaster prevention mechanisms in most ecosystems and other free services we all get from the surrounding environment are not easily replaceable or replicable, so maintaining biodiversity is important. These three levels work together to create the complexity of life on Earth. Biodiversity is important to humans for many reasons. 5.3 Importance of Biodiversity The Biodiversity Crisis. It covers the whole of Topic 3 which is Classification and Biodiversity. This of it like this. Biology II. An example would be certain types of moss since they can indicate the level of nutrition in the soil and the acidity. Biologists estimate that species extinctions are currently 500–1000 times the normal, or background, rate seen previously in Earth’s history. The more biodiversity, the stronger the ecosystem, the better it functions, and the better it can adapt to changes. The number of animals living on the Earth has plunged by half since 1970. A-Level Biology does pretty much what it says on the tin. There is a growing recognition that the level of biodiversity is an important factor in influencing the resilience of ecosystems to disturbance. What is biodiversity? In fact, I consider it as the science of the 21st century. Ø Uses related to biodiversity can be grouped into three categories: (1). For economic and various life support reasons, it is very important to protect and preserve biodiversity. Genetic diversity: It refers to the variation in gene within a species. 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